/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsExp/Public/Physics/CollisionGeometryVisualization.h
The FirstLineSetIndex parameter is used implement Settings->bRandomColors since random colors are determined using unique integers for each line set, which may be stored in separateUPreviewGeometryobjects. Since the initialization is partial this function doesn't set Settings->bVisualizationDirty, the caller should do that.
namespace UE { namespace PhysicsTools { void UE::PhysicsTools::PartiallyInitializeCollisionGeometryVisualization ( [UPreviewGeometry](API\Plugins\ModelingComponents\Drawing\UPreviewGeometry) * PartialPreviewGeom, [UCollisionGeometryVisualizationProperties](API\Plugins\MeshModelingToolsExp\Physics\UCollisionGeomet-) * Settings, const [FPhysicsDataCollection](API\Plugins\ModelingComponents\Physics\FPhysicsDataCollection) & PhysicsData, int32 FirstLineSetIndex, float DepthBias, int32 CircleStepResolution ) } }